24" x 34" or 34" x 24" Cube Core Eggcrate Return Air Grille Copper Coil-Insulated Line Set our grill boasts an impressive

our grill boasts an impressive 96% airflow capacity

actual front end outer dimensions are approximately 27 5/8" width X 14 5/8" height

75" Width X 23

only measure the "hole" in the wall/duct

+ Product Details Size – 20"w X 40"h is the size for the duct opening measurement only

24" x 34" or 34" x 24" Cube Core Eggcrate Return Air Grille Copper Coil-Insulated Line Set our grill boasts an impressive+ Product Details Size 24" x 34" or 34" x 24" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 25. 75" X 35. 75". High Quality High quality, rust free aluminum construction with smooth finished edges and counter sunk screw holes (screws included); no sharp edges.. Installation Location sidewall and ceiling. Design Cubic core eggcrate design Offers highest airflow efficiency at almost 95%, reducing